Detailed Explanation of Organic Nitrogen Agents and Heterocyclic Compounds

① Fenaminosulf: 40% Dexon wettable powder, an anti-mold agent. It is a protective, highly systemic pesticide with strong translocation ability, capable of penetrating into the plant body and translocating to organs and tissues such as roots, stems and leaves, achieving both preventive and curative effects. Its action is mild and its efficacy is strong. It has excellent control effects against pathogens such as Fusarium, Penicillium, Septoria SPP., and can be mixed with other pesticides and fertilizers for use. ② Thiophanate-methyl: 70% Topsin-M wettable powder, commonly known as Topsin-M. It is a fungicide with both preventive and curative effects. It has functions such as rapid action, long-lasting effect and translocation. After application, it can be absorbed through leaves or roots and translocated into the plant body, preventing spore formation and inhibiting the further expansion of lesions. It has dual preventive and curative effects against diseases caused by fungal pathogens such as Colletotrichum SPP. It can be used for foliar spraying or root drenching, and can also be used for soaking during division or medium drenching after division. ③ Pencycuron: 30% Pencycuron solution, particularly effective against diseases caused by medium-borne pathogens, especially showing excellent control effects against medium-borne pathogens such as Fusarium, seedling blight fungi and Rhizoctonia. When used, drenching the stem base or root system shows particularly significant results. ④ Etridiazole: available as 25% Etridiazole emulsifiable concentrate and 35% Etridiazole wettable powder. It is a penetrant fungicide with control effects against medium-borne diseases caused by Phytophthora pathogens. It can be absorbed from the root system and translocated to stems and leaves, preventing spore germination and killing pathogens. Do not mix with acidic pesticides or fertilizers when using. Application method: for diseased plants found, dilute this agent at the recommended control dilution and apply by both spraying the diseased parts and drenching the medium for optimal results. ⑤ Mepronil: 75% Basitac wettable powder. It has particularly excellent control effects against medium-borne or fungal diseases such as seedling damping-off, white rot, sclerotinia rot, rust and root rot caused by basidiomycetes. Mepronil has both a protective antifungal ability that inhibits pathogen spore germination and germ tube germination, and a direct fungicidal ability that inhibits lesion expansion, worsening and kills pathogens, making it a protective and curative agent. It is extremely stable at pH 5-9, and can be used for stem and leaf spraying, medium drenching or division soaking. It is extremely safe and low in toxicity, and can be mixed with other pesticides or fertilizers to achieve control of multiplepests and diseaseseffects. ⑥ Prochloraz: 25% Sportak emulsifiable concentrate. It has control effects against fungal diseases such as those caused by Colletotrichum spp. and Fusarium SPP. Chinese orchid plants have poor tolerance to this agent, and spraying or soaking at high concentrations can easily cause phytotoxicity. Extra care must be taken during use to avoid harming the plants.